Page 143 - Science Class 6 Times Publication

Common salt

The chemical name of common salt
is sodium chloride. It is obtained by
evaporating the sea water. It is the
most useful substance in our kitchen.
It has a salty taste. Due to this taste,
it is used in pulses (dal), curry and
pickles. It is also used in cooking  sh
and meat. Our food becomes tasteless if
we don’t use common salt. The common

salt is also used to preserve sh, meat,
pickles, etc for their future use.
Iodine is another important chemical needed for our body. Iodine is
essential in trace amount and is found in the sea foods. Since Nepal is

far from oceans and seas, it is difcult to obtain sea foods. So, iodine
is mixed with common salt so that everybody consumes it. The salt
mixed with iodine is called iodized salt. The use of iodized salt makes

children mentally active and physically t. It also helps to prevent a
disease called goitre in people.

Turmeric (Besar)

Turmeric is obtained from the underground stem (rhizome) of
turmeric plant. First, the rhizome of turmeric is cleaned and then
cut into slices. The slices are dried in sunshine for several days. Then

the dried slices are ground into ne powder.

TURMERIC

Rhizome
Turmeric powder Powder

Plant

Times' Crucial Science and Environment 139 Book 6